Tolerance is not a problem of medieval philosophy. In addition to discussing reasons for this, the article refers to several texts, not coincidentally dialogues, in which elements of a sophisticated tolerance concept become apparent: For example the consideration of the outside perspective, i.e. less in specific theses than the discussion environment and the insight, although not represented, yet indicated, that the relation to claims of truth can only be a free one. Keywords: pluralism, truth claims, rationalism, philosophy of religion, assent.